Idina Menzel is single and…ready to mingle? , in December, the “Let It Go” crooner has gotten a taste of what it’s like to date as a single mother—and she’s not a fan. Speaking to Valentine on his radio show “Valentine in the Morning” last Monday, Menzel said, “It all sucks.””I don’t want to keep introducing him to people and having him form bonds and then take ’em away, you know,” she said, referring to the couple’s four-year-old son Walker. “It’s bad enough his mom and dad are getting divorced.”